LED (light-emitting diode) module and a light apparatus

ABSTRACT

An LED chip module includes a first electrode plate and a second electrode plate. A first set of LED chip and a second set of LED chip are respectively set on the first electrode plate and the second electrode plate. The second set of LED chip is electrically connected to the first set of LED chip. A plastic shell is fixedly connected to the first electrode plate and the second electrode plate by injection molding to make the first electrode plate and the second electrode plate keep a predetermined space between each other and make a lower surface of the first electrode plate and a lower surface of the second electrode plate be respectively connected to two different polarity terminals of the power supply to drive the first set of LED chip and the second set of LED chip to emit light.

CROSS REFERENCE

The present application is a continuation application of U.S. patentapplication Ser. No. 15/635,200 filed on Jun. 28, 2017.

TECHNICAL FIELD

The present invention relates to an LED (Light-Emitting Diode) moduleand a light apparatus, and in particular to the LED module and the lightapparatus with a good heat dissipation effect.

BACKGROUND OF INVENTION

Technology of an LED flourished in these years makes lighting industryhave big changes in these years. Many R & D people continue to focus ona variety of angles in the development of how to make LED more efficientconfiguration to produce a product with more light efficiency and higherstability.

Rise of heat dissipation and light efficiency has always been a goal ofR & D personnel efforts, which depends on developing and providing thecorresponding technical solutions to the LED chip which has not yetfound the blind spot.

SUMMARY OF THE INVENTION

According to a first embodiment of a present invention, the firstembodiment provides an LED chip module comprising a first electrodeplate and a second electrode plate. A first set of LED chip is set onthe upper surface of the first electrode plate, and a second set of LEDchip is set on the upper surface of the second electrode plate. Thesecond set of LED chip is electrically connected to the first set of LEDchip. The first electrode plate and the second electrode plate may bepatterned with a thin copper plate and then achieve a predeterminedshape of multiple first electrode plates and the second electrode platesby etching the partial regions.

The thin plate with the first electrode plate and the second electrodeplate may be placed in an injection molding machine to inject theplastic shell with a predetermined mold. The plastic shell is fixedlyconnected to the first electrode plate and the second electrode plate byinjection molding. The injection molded plastic, the first electrodeplate and the second electrode plate have a fixed adhesion so that thefirst electrode plate and the second electrode plate keep apredetermined space between each other. The plastic shell has an openingupward, downwardly making a lower surface of the first electrode plateand a lower surface of the second electrode plate are exposed so as tobe respectively connected to two different polarity terminals of thepower supply. A driving current after conversion of a battery or indoorpower source for driving the first set of LED chip and the second set ofLED chip to emit light.

The plastic shell has a groove upward and is filled with a fluorescentcoating. The fluorescent coating covers the first set of LED chip andthe second set of LED chip. Common light of LED chip is blue light.Through the composition of the fluorescent makes the blue light finallyshow a variety of optical properties of white light or other light.

Besides fluorescent, the nanometer particles may replace the fluorescentand the plastic shell may be done thinner. In addition, an originalgroove used to fill the fluorescent may also fill transparent heatdissipation material to increase heat dissipation effect. The plasticshell may be made of transparent material, which allows for a widerangle of light, less loss of light, and higher efficiency.

The first set of LED chip and the second set of LED chip have multipleLED chips. For example, an LED chip module may have three, five, ten orany other number of LED chips. The LED chips are placed on the firstelectrode plate or the second electrode plate in accordance with apredetermined rule and then may be connected in series with each otherby a metal wire. Of course, depending on different design requirements,the LED chips may also be connected in parallel, or partially inparallel, and partially in series.

The front and ends of the LED chips connected together may be connectedto the electrode plate by means of metal wires or perforations. The LEDusually needs to provide a positive and negative power supply.Therefore, external power supply may be respectively connected to thetwo electrode plates, and further provided to the multiple LED chipsconnected together.

In this embodiment, the multiple LED chips are electrically connectedtogether in series, and both ends of the multiple LED chips connected inseries are connected to each of the first electrode plate and the secondelectrode plates. In other design requirements may also use more thantwo electrode plates, the following may explain several differentdeformation as an example of the description.

The multiple LED chips are connected in series by a metal wire such asfine gold wire or copper wire. Other lead modes may also be set asneeded.

According to the experiment finds if the LED chip to maintainnon-aligned between two LED chips may further increase the uniformity oflight to avoid unnecessary light spots. For example, in one embodiment,at least two LED chips differ in the relative arrangement direction byan angle difference of more than 5 degrees, 10 degrees or greater. Inaddition to an angle, when a light source board above installation of anumber of LED chip module, besides the angle, a location of theplacement may also do a certain degree of random adjustment, which mayfurther improve the effect of light show.

Even in different LED chip modules, the placement of LED chips may bedifferent, the whole may achieve a more uniform optical effect.

In one embodiment, an area of the first electrode plate may be greaterthan an area of the second electrode plate and a number of LED chips inthe first set of LED chip is greater than a number of the second set ofLED chip. For example, the area ratio of the first electrode plate tothe area of the second electrode plate is about 1.2 to 1 to 2 to 1.

In addition, in one embodiment, the first set of LED chip and the secondset of LED chip are each fixed to the first electrode plate and thesecond electrode plate through an insulating adhesive. In other words,the LED chips are placed on a conductive electrode plate, but are notdirectly connected to the electrode plate.

In order to provide better heat dissipation effect, the best choice ofinsulation with heat dissipation effect of the adhesive, so that theheat of the LED through the electrode plate to other places for heat.

In addition, in order to achieve better heat dissipation effect, try toexpand a size of the electrode plate. For example, the direction inwhich the first electrode plate and the second electrode plate areperpendicular to each other is an extending direction. The length of thefirst electrode plate and the second electrode plate in an extendingdirection is larger than 90% with respect to the total length of theplastic shell in the extending direction. In other words, although theplastic shell is used to fix a relative position of the first electrodeplate and the second electrode plate, the size of the first electrodeplate and the second electrode plate and the area exposed on the backsurface of the plastic shell may be extended as much as possible.

When the back of the electrode plate with the larger plastic shell area,the plastic shell in the grasping electrode plate may increase thedifficulty, resulting in structural instability. At this point, at leastthrough the middle of the electrode plate hole in the injection moldingplastic, increase the plastic shell with the electrode plate betweenfixed ability.

Alternatively, an enclosing portion may be provided in a portion of thefour corners of the back of the plastic shell, such as two corners,three corners, or four corners to reinforce fixed force between thefirst electrode plate and the second electrode plate.

According to a second embodiment of the present invention provides alight apparatus. The light apparatus includes a substrate, a pluralityof patterned wires provided on the substrate, a plurality of LED chipmodules, and a driving circuit.

For the LED chip modules may refer above statement. Each of the LED chipmodule includes a first electrode plate, and a first set of LED chip isset on an upper surface of the first electrode plate. Each of the LEDchip module includes a second electrode plate, and a second set of LEDchip is electrically connected to the first set of LED chip. A plasticshell through which the plastic shell is formed by injection molding andfixedly connected to the first electrode plate and the second electrodeplate so that the first electrode plate and the second electrode plateare spaced apart from each other by a predetermined space. The lowersurface of the first electrode plate and the lower surface of the secondelectrode plate are respectively connected to two different polarityterminals of the power supply for driving the first set of LED chip andthe second set of LED chip to emit light. Fluorescent coating covers thefirst set of LED chip and the second set of LED chip.

The driving circuit is connected to a part of multiple patterned wiresto drive the multiple LED chip modules to emit light. The multiplepatterned wires may have a flat heat sink portion which is thermallyconnected to the first electrode plate and the second electrode plate ofmultiple LED chip modules. In other words, the patterned conductor maybe provided as an auxiliary pipe for heat dissipation in addition to theelectrical connection. A substrate may be made of aluminum material orother substrate having good heat dissipation characteristics in order tofurther increase the efficiency of heat dissipation.

An insulating layer may be set between the substrate and the patternedconductor to avoid short circuits. An area of multiple flat heatdissipating portions is at least a portion corresponding to the numberof the LED chips carried on the first electrode plate and the secondelectrode plate which are thermally connected. In other words, the areaof the patterned conductor may be configured to follow the number ofconnected LED chips, so that the effect of heat dissipation may beachieved more evenly and efficiently.

In addition to the number of LED chips, the heat distribution on theoverall light source plate may be measured and used to distribute thesize of the patterned wire extension at different locations to uniformlydissipate heat.

According to another embodiment of the present invention provides amethod of fabricating an LED chip module. The electrode plate is placedin the injection molding machine electrode plate by pattern etching orstamping, and the LED chip module is set on the electrode plate, and theconnecting wire is arranged to connect the series or parallel of the LEDchip. The fluorescent is filled as necessary to produce the desiredlight output.

Then, the LED chip module is placed on the light source plate tomanufacture the corresponding lamp. The wires for connecting themultiple LED chip modules may be patterned according to thecharacteristics of the LED chip module so that the area may bedissipated in the most efficient manner with the position. In addition,it is also possible to set different LED chip modules at differentpositions of the same light source board to optimize the output lightfield effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an embodiment example of a light.

FIG. 2 illustrates an embodiment of a light source board.

FIG. 3 illustrates a part of a profile of a light source board.

FIG. 4 illustrates a schematic representation of a portion of elementsof an LED chip module.

FIG. 5 illustrates a schematic representation of a portion of elementsof an LED chip module.

FIG. 6 illustrates a schematic cross-sectional diagram of an embodimentof an LED chip module.

FIG. 7 illustrates a diagram of an embodiment of relationship for LEDchip module rear element.

FIG. 8 illustrates a diagram of relationship between multiple LED chipmodules and patterned metal wires.

FIG. 9 illustrates another diagram of relationship between multiple LEDchip modules and patterned metal wires.

FIG. 10 illustrates an example of LED chip arrangement on an LED chipmodule.

FIG. 11 illustrates another example of LED chip arrangement on an LEDchip module.

FIG. 12 illustrates another example of LED chip arrangement on an LEDchip module.

FIG. 13 illustrates a configuration diagram of a back of the LED chipmodule.

FIG. 14 illustrates another configuration diagram of a back of the LEDchip module.

FIG. 15 illustrates another configuration diagram of a back of the LEDchip module.

FIG. 16 illustrates another configuration diagram of a back of the LEDchip module.

DETAILED DESCRIPTION

Please refer to FIG. 1, FIG. 1 is an embodiment example of a light. Inthe embodiment, the light is a light bulb and has a light transmissioncover 1091, a light source board 101, a heat radiating cup 1092, adriving circuit board 1093, an Edison light cap 1094, and a light nail1095. The light nail 1095 and the Edison light cap 1094 receive twoelectrical inputs from indoor power supply. Through the circuit of thedriving circuit board 1093 generates a corresponding driving current fordriving the LED chip on the light source board 101 to emit light.

Please refer to FIG. 2, FIG. 2 is an embodiment of a light source board.In the embodiment, the light source board 101 has multiple LED chipmodules 103. In the example, the LED chip modules 103 are arranged in aring shape. However, the LED chip modules 103 may also be arranged in avariety of different arrangements, or even made of light bars, foldedstructures to meet different design requirements at different lighteffect requirements.

Please refer to FIG. 3, FIG. 3 is a part of a profile of a light sourceboard. In FIG. 3, an LED chip module has a plastic shell 1031, an LEDchip 1033, and an electrode plate 1032. Two or more LED chips 1033 arefixedly placed on two or more electrode plates 1032 through a suitableglue. The back surface of the electrode plate 1032 is further connectedto a lead 1041 on the light source board by various welding methods suchas the welding point 1040. An insulating layer 1042 is set below thelead wire 1041, and then an aluminum material substrate 1043 may be setbelow to achieve a better heat dissipation effect. The substrate 1043may certainly be replaced with another material.

Please refer to FIG. 4, FIG. 4 is a schematic representation of aportion of elements of an LED chip module. In the embodiment, the firstset of LED chip have two LED chips 422, 423 set on the first electrodeplate 412. The second set of LED chip has an LED chip 421 set on thesecond electrode plate 411. The LED chip 421 has two electricalconnection terminals 4211, 4212. The LED chips 421, 422, 423 areconnected in series through the metal wires 431, 432, 433, 434 and arerespectively connected to the first electrode plate 411 and the secondelectrode plate 412 to a positive connection terminal 452 a negativeconnection terminal 451 of external power source. The external powersource transmits the driving current to the LED chips 421, 422, 423through the first electrode plate 411 and the second electrode plate 412to generate light for illumination.

Please refer to FIG. 5, a schematic representation of a portion ofelements of an LED chip module. The electrode plates 411, 412 carryingthe LED chip are fixed through the plastic shell 501 and held at apredetermined space. The plastic shell may hold the electrode plates411, 412 by injection molding or pasting.

Please refer to FIG. 6, a schematic cross-sectional diagram of anembodiment of an LED chip module. The LED chip module has a firstelectrode plate 611 and a second electrode plate 612. On the firstelectrode plate 612 and the second electrode plate 612, the lightemitting diode chips 621, 622 are disposed. The LED chips are connectedin parallel or in series with each other through a metal wire 632, andthen respectively connected to an external power source through thefirst electrode plate 611 and the second electrode plate 612 by wires631, 633. The plastic shell 601 holds the first electrode plate 611 andthe second electrode plate 612 so as to be spaced apart and has arecessed upwardly for filling the fluorescent so as to outputillumination conforming to the desired optical characteristics.

Please refer to FIG. 7, which illustrates a diagram of an embodiment ofrelationship for LED chip module rear element. The LED chip may producea certain degree of heat when light. If the heat may be effectivelyexcluded, the life of the LED chip may be a considerable help. In orderto increase the heat dissipation, the area of the electrode plate 72 maybe increased.

For instance, in the example, the two electrode plates face direction701 has a vertical direction called extension direction 702. On the backside of the LED chip module, the injection shell 71 has an overalllength 731 in the extension direction 702. The electrode plate 72 has alength 731 in the extending direction 702. In a better case, the length731 of the length 732 ratio more than 90%, or even 95% may achieve abetter heat dissipation effect.

Please refer to FIG. 8, FIG. 8 is a diagram of relationship betweenmultiple LED chip modules and patterned metal wires. The LED chipmodules 811, 812, 813, 814 are arranged in a ring shape. The patternedwires 821, 822, 823 are set on the substrate of the light source boardto connect the LED chip modules 811, 812, 813, 814 in series or inparallel, and finally to the driving power source. For the purpose ofheat dissipation, the patterned wires 821, 822, 823 may be formed in aflat pattern. In the example, the flat pattern is fan-shaped, but ofcourse not in such a configuration as a limitation of the presentinvention. On the back surface of the LED chip module 811, two externalelectrode plates 8111 and 8112 respectively correspond to the positiveelectrode and the negative electrode. Through the expansion of the areaincreases the heat dissipation effect.

Please refer to FIG. 9, FIG. 9 is another diagram of relationshipbetween multiple LED chip modules and patterned metal wires. Similar toFIG. 8, but the patterned conductor configuration of FIG. 9 furthercorresponds to the number of LED chips carried by the connectedelectrode plate. For example, the two electrode plates 921, 922 of theadjacent LED chip modules are connected through a patterned conductor91. The patterned conductor 91 sets the area size and the shape of thedifferent extending regions according to the number of the LED chips onthe connected electrode plates 921. For instance, in the example, thenumber of the LED chips on the electrode plate 921 is small, so that thefirst region 911 of the patterned conductor 91 closer to the electrodeplate 921 has a smaller area and is close to the electrode plate havinga relatively high light emitting diode chip 922 and is a relativelylarge area of the area 912. Through the design may further make the heatmore uniform.

Please refer to FIG. 10, FIG. 10 is an example of LED chip arrangementon an LED chip module. In the example, the electrode plate 1071 placesan LED chip 1081. Two LED chips 1082, 1083 are placed on the electrodeplate 1072. The LED chip 1081 has a placement direction 10811 in theelectrode plate. The three LED chips 1081, 1088, and 8383 are arrangedin different directions and make the light emitted more evenly to avoidunnecessary spots and other phenomena.

For example, at least two LED chips differ in the placement angle bymore than 5 degrees. In some products that require higher quality, theplacement angle may be set more than 10 degrees, or even set the anglewith a random number.

Please refer to FIG. 11, FIG. 11 is another example of LED chiparrangement on an LED chip module. In the LED chip module of theembodiment, there are three non-rectangular electrode plates 1101, 1102,1103. Multiple LED chips 1111, 1112, 1113, and 1114 are set on theelectrode plates 1101, 1102. The LED chips 1111, 1112, 1113, 1114 areconnected in series through wires 1122, 1123, 1124 and are connected toelectrode plates 1102, 1103 through wires 1121, 1125 in order to connectan external power source.

In the embodiment, the electrode plates some of the LED chips 1111, 1112located are not connected to an external power source, but may stillfunction as a heat sink. In other words, some of the LED chip electrodeplate is not directly connected to the external power supply, but play aheat dissipation function. The configuration in the circular light platemay have a good heat dissipation effect, and easy to design patternedwire.

Please refer to FIG. 12, FIG. 12 is another example of LED chiparrangement on an LED chip module 122. In the example are threeelectrode plates 1201, 1202 and 1203. The LED chips 1211, 1212, and 1213are set on the electrode plates 1201, 1202, and 1203.

In addition to this configuration, there may be many differentconfigurations, which may be considered to be within the scope of thepresent invention.

Please refer to FIG. 13, FIG. 14 and FIG. 15. FIG. 13 is a configurationdiagram of a back of the LED chip module. FIG. 14 is anotherconfiguration diagram of a back of the LED chip module.

FIG. 15 is another configuration diagram of a back of the LED chipmodule.

In FIG. 13, the electrode plate 133 extends in the extending directionto the top portion 132 and achieve a better heat dissipation effectbecause the plastic shell in the back only part of the 131. However,such a configuration may have a stable problem. Although it is possibleto treat the surface of the electrode plate by bumping or roughening thesurface of the electrode plate by selecting the material to be molded orby performing some surface treatment.

In FIG. 14, the electrode plate 142 is surrounded by the peripheralcorners 141 of the plastic housing, so that the stability may be furtherincreased, and the exposed area of the electrode plate is enlarged asmuch as possible to increase the heat dissipation effect.

In FIG. 15, the electrode plate 152 further has a protruding portion153, and the surrounding corners 151 may increase the heat dissipationeffect.

FIG. 16 provides a flow diagram of a method for making an LED chipmodule. First, patterning the pattern of the electrode plate by patternetching or punching (step 1601), the electrode plate is placed in theinjection molding machine-coated electrode plate (step 1602), the LEDchip module is set on the electrode plate and set to be connected towires (step 1604) to complete the series or parallel connection of thelight emitting diode chips. The fluorescent is filled as necessary toproduce the desired light output.

Then, the LED chip module is set on the light source plate tomanufacture the corresponding light. The wires for connecting multipleLED chip modules may be patterned according to the characteristics ofthe LED chip module so that the area may be dissipated in the mostefficient manner with the position. In addition, it is also possible toset different LED chip modules at different positions of the same lightsource board to optimize the output light field effect.

In addition to the foregoing description, the following summaryillustrates various possibilities according to embodiments of thepresent invention.

According to a first embodiment of a present invention, the firstembodiment provides an LED chip module comprising a first electrodeplate and a second electrode plate. A first set of LED chip is set onthe upper surface of the first electrode plate, and a second set of LEDchip is set on the upper surface of the second electrode plate. Thesecond set of LED chip is electrically connected to the first set of LEDchip. The first electrode plate and the second electrode plate may bepatterned with a thin copper plate and then achieve a predeterminedshape of multiple first electrode plates and the second electrode platesby etching the partial regions.

The thin plate with the first electrode plate and the second electrodeplate may be placed in an injection molding machine to inject theplastic shell with a predetermined mold. The plastic shell is fixedlyconnected to the first electrode plate and the second electrode plate byinjection molding. The injection molded plastic, the first electrodeplate and the second electrode plate have a fixed adhesion so that thefirst electrode plate and the second electrode plate keep apredetermined space between each other. The plastic shell has an openingupward, downwardly making a lower surface of the first electrode plateand a lower surface of the second electrode plate are exposed so as tobe respectively connected to two different polarity terminals of thepower supply. A driving current after conversion of a battery or indoorpower source for driving the first set of LED chip and the second set ofLED chip to emit light.

The plastic shell has a groove upward and is filled with a fluorescentcoating. The fluorescent coating covers the first set of LED chip andthe second set of LED chip. Common light of LED chip is blue light.Through the composition of the fluorescent makes the blue light finallyshow a variety of optical properties of white light or other light.

Besides fluorescent, the nanometer particles may replace the fluorescentand the plastic shell may be done thinner. In addition, an originalgroove used to fill the fluorescent may also fill transparent heatdissipation material to increase heat dissipation effect. The plasticshell may be made of transparent material, which allows for a widerangle of light, less loss of light, and higher efficiency.

The first set of LED chip and the second set of LED chip have multipleLED chips. For example, an LED chip module may have three, five, ten orany other number of LED chips. The LED chips are placed on the firstelectrode plate or the second electrode plate in accordance with apredetermined rule and then may be connected in series with each otherby a metal wire. Of course, depending on different design requirements,the LED chips may also be connected in parallel, or partially inparallel, and partially in series.

The front and ends of the LED chips connected together may be connectedto the electrode plate by means of metal wires or perforations. The LEDusually needs to provide a positive and negative power supply.Therefore, external power supply may be respectively connected to thetwo electrode plates, and further provided to the multiple LED chipsconnected together.

In this embodiment, the multiple LED chips are electrically connectedtogether in series, and both ends of the multiple LED chips connected inseries are connected to each of the first electrode plate and the secondelectrode plates. In other design requirements may also use more thantwo electrode plates, the following may explain several differentdeformation as an example of the description.

The multiple LED chips are connected in series by a metal wire such asfine gold wire or copper wire. Other lead modes may also be set asneeded.

According to the experiment finds if the LED chip to maintainnon-aligned between two LED chips may further increase the uniformity oflight to avoid unnecessary light spots. For example, in one embodiment,at least two LED chips differ in the relative arrangement direction byan angle difference of more than 5 degrees, 10 degrees or greater. Inaddition to an angle, when a light source board above installation of anumber of LED chip module, besides the angle, a location of theplacement may also do a certain degree of random adjustment, which mayfurther improve the effect of light show.

Even in different LED chip modules, the placement of LED chips may bedifferent, the whole may achieve a more uniform optical effect.

In one embodiment, an area of the first electrode plate may be greaterthan an area of the second electrode plate and a number of LED chips inthe first set of LED chip is greater than a number of the second set ofLED chip. For example, the area ratio of the first electrode plate tothe area of the second electrode plate is about 1.2 to 1 to 2 to 1.

In addition, in one embodiment, the first set of LED chip and the secondset of LED chip are each fixed to the first electrode plate and thesecond electrode plate through an insulating adhesive. In other words,the LED chips are placed on a conductive electrode plate, but are notdirectly connected to the electrode plate.

In order to provide better heat dissipation effect, the best choice ofinsulation with heat dissipation effect of the adhesive, so that theheat of the LED through the electrode plate to other places for heat.

In addition, in order to achieve better heat dissipation effect, try toexpand a size of the electrode plate. For example, the direction inwhich the first electrode plate and the second electrode plate areperpendicular to each other is an extending direction. The length of thefirst electrode plate and the second electrode plate in an extendingdirection is larger than 90% with respect to the total length of theplastic shell in the extending direction. In other words, although theplastic shell is used to fix a relative position of the first electrodeplate and the second electrode plate, the size of the first electrodeplate and the second electrode plate and the area exposed on the backsurface of the plastic shell may be extended as much as possible.

When the back of the electrode plate with the larger plastic shell area,the plastic shell in the grasping electrode plate may increase thedifficulty, resulting in structural instability. At this point, at leastthrough the middle of the electrode plate hole in the injection moldingplastic, increase the plastic shell with the electrode plate betweenfixed ability.

Alternatively, an enclosing portion may be provided in a portion of thefour corners of the back of the plastic shell, such as two corners,three corners, or four corners to reinforce fixed force between thefirst electrode plate and the second electrode plate.

According to a second embodiment of the present invention provides alight apparatus. The light apparatus includes a substrate, multiplepatterned wires provided on the substrate, multiple LED chip modules,and a driving circuit.

For the LED chip modules may refer above statement. Each of the LED chipmodule includes a first electrode plate, and a first set of LED chip isset on an upper surface of the first electrode plate. Each of the LEDchip module includes a second electrode plate, and a second set of LEDchip is electrically connected to the first set of LED chip. A plasticshell through which the plastic shell is formed by injection molding andfixedly connected to the first electrode plate and the second electrodeplate so that the first electrode plate and the second electrode plateare spaced apart from each other by a predetermined space. The lowersurface of the first electrode plate and the lower surface of the secondelectrode plate are respectively connected to two different polarityterminals of the power supply for driving the first set of LED chip andthe second set of LED chip to emit light. A fluorescent coating coversthe first set of LED chip and the second set of LED chip.

The driving circuit is connected to a part of multiple patterned wiresto drive the multiple LED chip modules to emit light. The multiplepatterned wires may have a flat heat sink portion which is thermallyconnected to the first electrode plate and the second electrode plate ofmultiple LED chip modules. In other words, the patterned conductor maybe provided as an auxiliary pipe for heat dissipation in addition to theelectrical connection. A substrate may be made of aluminum material orother substrate having good heat dissipation characteristics in order tofurther increase the efficiency of heat dissipation.

An insulating layer may be set between the substrate and the patternedconductor to avoid short circuits. An area of multiple flat heatdissipating portions is at least a portion corresponding to the numberof the LED chips carried on the first electrode plate and the secondelectrode plate which are thermally connected. In other words, the areaof the patterned conductor may be configured to follow the number ofconnected LED chips, so that the effect of heat dissipation may beachieved more evenly and efficiently.

In addition to the number of LED chips, the heat distribution on theoverall light source plate may be measured and used to distribute thesize of the patterned wire extension at different locations to uniformlydissipate heat.

According to another embodiment of the present invention provides amethod of fabricating an LED chip module. The electrode plate is placedin the injection molding machine electrode plate by pattern etching orstamping, and the LED chip module is set on the electrode plate, and theconnecting wire is arranged to connect the series or parallel of the LEDchip. The fluorescent is filled as necessary to produce the desiredlight output.

Then, the LED chip module is placed on the light source plate tomanufacture the corresponding lamp. The wires for connecting themultiple LED chip modules may be patterned according to thecharacteristics of the LED chip module so that the area may bedissipated in the most efficient manner with the position. In addition,it is also possible to set different LED chip modules at differentpositions of the same light source board to optimize the output lightfield effect.

In addition to the above embodiments, still various modifications may bemade. Within the spirit of the same invention, various designs that arefamiliar to the skilled in the art are intended to be included in thepresent invention range.

The invention claimed is:
 1. An LED device, comprising: a firstelectrode plate, wherein a first set of LED chip is set on an uppersurface of the first electrode plate, the first set of LED chips arekept unaligned, and at least two of the first set of LED chips arespaced apart by more than 5 degrees; a second electrode plateelectrically connected to the first set of LED chip; a plastic shell,wherein the plastic shell is fixedly connected to the first electrodeplate and the second electrode plate by injection molding to make thefirst electrode plate and the second electrode plate keep apredetermined space between each other and make a lower surface of thefirst electrode plate and a lower surface of the second electrode platebe respectively connected to two different polarity terminals of a powersupply to drive the first set of LED chip and the second set of LED chipto emit light; and a fluorescent layer, wherein the fluorescent layercovers the first set of LED chip and the second set of LED chip.
 2. TheLED chip module of claim 1, wherein a second set of LED chip is set onthe upper surface of the second electrode plate, and the second set ofLED chip is electrically connected to the first set of LED chip.
 3. TheLED chip module of claim 2, wherein the first set of LED chip and thesecond set of LED chip have a plurality of LED chips, the plurality ofLED chips are electrically connected together in series, and two ends ofthe LED chip in series are each connected to the first electrode plateand the second electrode plate.
 4. The LED chip module of claim 2,wherein the plurality of LED chips are connected in series by a metalwire.
 5. The LED chip module of claim 2, wherein an area of the firstelectrode plate is larger than an area of the second electrode plate,and a number of LED chips in the first set of LED chip is larger than anumber of LED chips of the second set of LED chip.
 6. The LED chipmodule of claim 2, wherein the first set of LED chip and the second setof LED chip are each fixed to the first electrode plate and the secondelectrode plate through an insulating adhesive.
 7. The LED chip moduleof claim 6, wherein the insulating adhesive has a heat dissipationeffect.
 8. The LED chip module of claim 1, wherein a direction which thefirst electrode plate and the second electrode plate are perpendicularto each other is an extending direction, length of the first electrodeplate and the second electrode plate in an extending direction is largerthan 90% with respect to the total length of a plastic shell in theextending direction.
 9. The LED chip module of claim 1, wherein theplastic shell has a surrounding portion at a portion of four corners tostrengthen adhesion for the first electrode plate and the secondelectrode plate.
 10. The LED chip module of claim 2, wherein the firstelectrode plate and the second electrode plate have at least oneperforation, when injecting to the plastic shell, ingredients extend tothe perforations to strengthen adhesion for the first electrode plateand the second electrode plate.
 11. A light apparatus, comprising: asubstrate; a plurality of patterned wires being set on the substrate; aplurality of LED chip modules, wherein each of the LED chip modulecomprises a first electrode plate, and a first set of LED chip is set onan upper surface of the first electrode plate, the first set of LEDchips are kept unaligned, and at least two of the first set of LED chipsare spaced apart by more than 5 degrees, each of the LED chip modulecomprises a second electrode plate electrically connected to the firstset of LED chip, a plastic shell through the plastic shell is formed byinjection molding and fixedly connected to the first electrode plate andthe second electrode plate so that the first electrode plate and thesecond electrode plate are spaced apart from each other by apredetermined space, the lower surface of the first electrode plate andthe lower surface of the second electrode plate are respectivelyconnected to two different polarity terminals of the power supply fordriving the first set of LED chip to emit light, and fluorescent coatingcovers the first set of LED chip and the second set of LED chip; and adriving circuit, wherein the driving circuit is connected to a part ofplurality of patterned wires to drive the plurality of LED chip modulesto emit light, the plurality of patterned wires have a flat heat sinkportion thermally connected to the first electrode plate and the secondelectrode plate of plurality of LED chip modules, and an area ofplurality of flat heat dissipating portions is at least a portioncorresponding to the number of the LED chips carried on the firstelectrode plate and the second electrode plate thermally connected. 12.The light apparatus of claim 11, further comprising a second set of LEDchips placed on the second electrode plate connecting to the first setof LED chips.
 13. The light apparatus of claim 11, wherein the flat heatdissipation portion is the patterned wire extension portion electricallyconnected to the first electrode plate or the second electrode plate,and the plurality of patterns of the patterned wires are distributedaccording to a distribution of heat to uniformly heat dissipation. 14.The light apparatus of claim 12, wherein the first set of LED chip andthe second set of LED chip have a plurality of LED chips, the pluralityof LED chips are electrically connected together in series, and two endsof the LED chip in series are each connected to the first electrodeplate and the second electrode plate.
 15. The light apparatus of claim14, wherein the plurality of LED chips are connected in series by ametal wire.
 16. The light apparatus of claim 12, wherein an area of thefirst electrode plate is larger than an area of the second electrodeplate, and a number of LED chips in the first set of LED chip is largerthan a number of LED chips of the second set of LED chip.
 17. The lightapparatus claim 12, wherein the first set of LED chip and the second setof LED are each fixed to the first electrode plate and the secondelectrode plate through an insulating adhesive.
 18. The light apparatusof claim 11, wherein the insulating adhesive has a heat dissipationeffect.
 19. The light apparatus of claim 11, wherein a direction thefirst electrode plate and the second electrode plate are perpendicularto each other is an extending direction, length of the first electrodeplate and the second electrode plate in an extending direction is largerthan 90% with respect to the total length of a plastic shell in theextending direction.
 20. The light apparatus of claim 11, wherein theplastic shell has a surrounding portion at a portion of four corners tostrengthen adhesion for the first electrode plate and the secondelectrode plate.